package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

public class JDBCDemo3 {
    public static void main(String[] args) {
        try(
                Connection connection = DBUtil.getConnection();
        ) {
            Statement statement = connection.createStatement();
            String sql = "DELETE FROM userinfo " + "WHERE username='哈哈' ";
            System.out.println(sql);
            int num = statement.executeUpdate(sql);
            if (num > 0) {
                System.out.println("修改成功");
            } else {
                System.out.println("修改失败");
            }
        }catch (SQLException e){
            e.printStackTrace();
        }
    }
}
